Part I. Social Choice: 1. Consequentialist social norms for public decisions Peter J. Hammond; 2. Information and invariance in normative choice Amartya Sen; 3. Utilitarian morality in a world of very half-hearted altruists John C. Harsanyi; 4. On the implementation of social choice rules in irrational societies Leonid Hurwicz; 5. Walrasian social choice: some simple axiomatic approaches Louis Gevers; Part II. Decision Making in the Public Sector: 6. Testing for optimality in the absence of convexity Herbert E. Scarf; 7. Toward a theory of planning Michael D. Intriligator and Eytan Sheshinski; 8. On the social risk premium David A. Starrett; 9. A problem of financial market equilibrium when the timing of tax payments is indeterminate David F. Bradford; 10. The shadow price of capital: implications for the opportunity cost of public programs, the burden of the debt, and tax reform Robert C. Lind.